Keystones — Cornerstone
Five GCSE retrieval questions · 31 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: -3 + 8
Answer: 5 -
2. Algebra
Collect like terms: 2x + 4y + 6x + 3y
Answer: 8x + 7y -
3. Geometry
Calculate the hypotenuse when a = 11cm and b = 4cm
Answer: 11.7cm -
4. Ratio
Find 48% of 419
Answer: 201.12 -
5. Statistics
Find the mean of: 7, 9, 8, 10
Answer: 8.5